Relationship between liquid phase content and the orientation of PMNT ceramics by TGG method

Abstract

The effects of glass frit on the sintering and electric properties of PMN-PT textured ceramics were investigated. The glass frits, including PbO, Bi₂O₃ and ZnO, were selected since liquid phase sintering lowered the PMN-PT sintering temperature. The piezoelectric properties of PMN-PT ceramics with glass frit addition are strongly dependent on the densification. The addition of glass frits into PMN-PT matrix reduced the sintering temperature to 1 100 °C instead of 1 150 °C for samples without glass. The piezoelectric coefficients (d ₃₃) of PMN-PT textured ceramics achieved 568 pc/N with 1 wt% excess PbO.

Keywords

texture / liquid phase / piezoelectric property / templated grain grouth(TGG)

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